Sunflower oil quality and quantity as affected by rhizopus head rot

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Abstract
Sunflower seed (Helianthus annus L.) from plants infected with head rot caused byRhizopus spp. exhibited serious oil quality problems. Free fatty acid content of this oil was 19.4%, compared with 0.8% for oil from seed of healthy plants. Oil from diseased seed was also higher in palmitic, stearic, arachidic, behenic and lignoceric fatty acids. In addition, diseased plants yielded only 81% as much seed and only 55% as much oil.